Surface-brightness images and profiles with the WHT data in the luminance filter. Left panel: binned image at a size of 5 × 5 pixels (equivalent to 1.333 × 1.333 arcsec) color-coded in surface brightness and oriented so that the stream appears vertically. Middle panel: similar to left panel but with all external sources masked and then binned to 5 × 5 pixels. Right panel: photometric profile in the luminance band L (approximately equivalent to g + r) in the cross section (left-right) direction. The gray error regions correspond to 1σ. The widths in the transverse direction of the three panels coincide in spatial scale.